Association of Helicobacter pylori and Chlamydia pneumoniae infections with coronary heart disease and cardiovascular risk factors
Open accessAbstract
Objective: To investigate the relation between seropositivity to chronic infections with Helicobacter pylori and Chlamydia pneumoniae and both coronary heart disease and cardiovascular risk factors. Objective:To investigate the relation between seropositivity to chronic infections with Helicobacter pylori and Chlamydia pneumoniae and both coronary heart disease and cardiovascular risk factors. Setting: General practices in Merton, Sutton, and Wandsworth, south London. Subjects: 388 white south London men aged 50-69. Main outcome measures: Evidence of coronary risk factors and infection with H pylori or C pneumoniae. Results: 47 men (12.1%) had electrocardiographic evidence of ischaemia or infarction. 36 (76.6%) and 18 (38.3%) were seropositive for H pylori and C pneumoniae, respectively, compared with 155 (45.5%) and 62 (18.2%) men with normal electrocardiograms. Odds ratios for abnormal electrocardiograms were 3.82 (95% confidence interval 1.60 to 9.10) and 3.06 (12.33 to 7.01) in men seropositive for H pylori and C pneumoniae, respectively, after adjustment for a range of socioeconomic indicators and risk factors for coronary heart disease. Cardiovascular risk factors that were independently associated with seropositivity to H pylori included fibrinogen concentration and total leucocyte count. Seropositivity to C pneumoniae was independently associated with raised fibrinogen and malondialdehyde concentrations. Conclusions: Both H pylori and C pneumoniae infections are associated with coronary heart disease. These relations are not explained by a wide range of confounding factors. Possible mechanisms include an increase in risk factor levels due to a low grade chronic inflammatory response.
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- Authors
- Patel, P., Mendall, M. A., Carrington, D., Strachan, D. P., Leatham, E., Molineaux, N., Levy, J., Blakeston, C., Seymour, C. A., Camm, A. J., & Northfield, T. C.
- Affiliations
- St George's, University of London (GB)
- Venue
- BMJ
- Publisher
- BMJ
- Published
- 1995-09-16
- Volume
- 311
- Issue
- 7007
- Pages
- 711-714
- ISSN
- 0007-1447 (ISSN-L)
- 0959-8138
- 1468-5833
- PMC
- PMC2550716
- OpenAlex
- W1988289155
- Cited by
- 592
- References
- 32
- Citations by year
- 2026: 2 · 2025: 1 · 2024: 5 · 2023: 3 · 2022: 7 · 2021: 4 · 2020: 7 · 2019: 6 · 2018: 14 · 2017: 5 · 2016: 4 · 2015: 11 · 2014: 12 · 2013: 6 · 2012: 12
- FWCI
- 54.25
- Type
- journal article
- Language
- en
- Open access
- green
- www.ncbi.nlm.nih.gov
- Licence
- www.bmj.com/company/legal-information/terms-conditions/legal-information/tdm-licencepolicy (tdm)
- Locations
- BMJ (publishedVersion)
- PubMed Central (publishedVersion)
- PubMed (publishedVersion)
- HighWire Press Open Archive (submittedVersion)
- Topics
- Health Sciences › Medicine › Surgery › Helicobacter pylori-related gastroenterology studies
- Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiovascular Health and Risk Factors
- Life Sciences › Immunology and Microbiology › Immunology › Atherosclerosis and Cardiovascular Diseases
- Keywords
- Helicobacter pylori, Chlamydia pneumoniae, coronary artery disease, cardiovascular risk factors, seropositivity, chronic infection, fibrinogen, malondialdehyde, white blood cell count, myocardial infarction, low-grade inflammation, men
- MeSH terms
- Aged, C-Reactive Protein, Chlamydia Infections, Coronary Disease, Cross-Sectional Studies, Electrocardiography, Fibrinogen, Humans, Leukocyte Count, London, Male, Middle Aged, Risk Factors, Helicobacter pylori, Helicobacter Infections, Chlamydophila pneumoniae
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Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
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